Just my opinion. He's pretty much a flawless hockey player. Puckhandling, skating, passing, shooting, hockey IQ, work ethic, tenacity, defensive stick, awareness and responsibility, poise, creativity, the ability to think and execute at full speed and with limited time and space. There's practically no weakness to his game, except for one pretty signigicant one - physical size and strength. He is quite strong relative to his size and age though, so I'm fairly confident that in due time he can get to a point where it's not a major limiting factor in the NHL.
And with Byfield I have some concerns. He certainly doesn't use his frame to it's full advantage. He plays a bit of a perimeter game. That's not a deciding factor, as he has plenty of time to figure it out. But a bigger concern to me is his pace. Yes he's a phenomenal skater, but he often looks slow to react to the play around him, and despite his size he loses puck battles to smaller, quicker players.
Granted, I've watched Raymond upwards of 20 times, compared to Byfield who, excluding his limited role at World Juniors, I've only seen maybe six or seven times.
So yes, to me Raymond is clearly the second best prospect in the draft. I would say upside is better than Lafreniere's. But I'd still rank Lafreniere ahead of him because he's a safer pick.